How to compare a list of lists/sets in python?

Question

What is the easiest way to compare the 2 lists/sets and output the differences? Are there any built in functions that will help me compare nested lists/sets?

Inputs:

Answer 1

By using set comprehensions, you can make it a one-liner. If you want:

to get a set of tuples, then:

Differences = {tuple(i) for i in First_list} ^ {tuple(i) for i in Secnd_list}

Or to get a list of tuples, then:

Differences = list({tuple(i) for i in First_list} ^ {tuple(i) for i in Secnd_list})

Or to get a list of lists (if you really want), then:

Differences = [list(j) for j in {tuple(i) for i in First_list} ^ {tuple(i) for i in Secnd_list}]

PS: I read here: https://stackoverflow.com/a/10973817/4900095 that map() function is not a pythonic way to do things.